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Lecture3 Atoms Electrons and Bonding

Phhk where p is the momentum h is constant plancks

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Unformatted text preview: same time (The Pauli exclusion principle) •  1925 – de Broglie showed that matter such as electrons and atoms exhibited a wave-like property as well as the standard particle-like property. p=h/λ=hk, where p is the momentum, h is constant (Planck’s Constant), λ is the wavelength, k is the wavenumber 2π/λ and h=h /2π. EE 332 Spring 2013 History of Physical Models •  1926 – Schrodinger came up with a wave-based version of Quantum Mechanics. •  1927 – Heisenberg showed that you could not know both the time and energy or the momentum and position perfectly at the same instant. Specifically Δp Δx ≥h ΔE Δt ≥h ………………….Etc………… EE 332 Spring 2013 Quantum Mechanics Let’s examine few of them in more detail •  Photoelectric effect •  Bohr Model •  Schrödinger equation •  Atomic Structure EE 332 Spring 2013 Photoelectric Effect Em = hυ − qΦ EE 332 Spring 2013 The (Hydrogen Atom) The Bohr Model Bohr Model Electron binding energy in H EH=-m0q4/32(πε0hn)2=-13.6/n2 eV n = 1, 2, 3, … EE 332 Spring 2013 Schrödenger Equation: •In “Electrical Properties of Materials”, Solym...
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